The following data have been collected for four cost types - labor, administrative expenses, materials, power - at two activity levels: Cost type Cost @ 100 units $ Cost @ 140 units $ Labour Administrative expenses Materials Power 8,000 5,000 6,500 6,700 10,560 5,000 9,100 8,580 Assuming linearity, match the four cost types labor, administrative expenses, materials and power respectively as Variable, Semi-Variable and Fixed. Labor [Choose Materials [Choose Power Choose